International Institute of Minerals Appraisers

P.O. Box 19529, Boulder, Colorado, USA 80308

Contact

Call or send E-mail for more information to the President or to the Secretary.

For information about policy matters or to communicate with the official spokesperson for and of the Institute, please contact:

  • John B. Gustavson -- Certified Member No. 1992-01
  • IIMA President
  • Mineral Appraiser LLC
  • 2265 Hillsdale Circle
  • Boulder, Colorado, USA 80305
  • Phone No: 1-303-818-5992
  • Fax No: 1-303-499-7637
  • Email: johngustavson1@aol.com

For information about the history of the Institute or about the capabilities of our various Certified Minerals Appraisers, please contact:

  • Darwin Werthessen -- Certified Member No. 2019-02
  • IIMA Secretary
  • 674 Summer Street
  • Bridgewater, Massachusetts, USA 02324
  • Phone No: 508-846-6799
  • Cell No: 508-846-6799
  • Email: dwerthessen@gmail.com

The Headquarters of the IIMA is located at:

  • International Institute of Minerals Appraisers
  • P.O. Box 19529
  • Boulder, Colorado, USA 80308
  • TEL: 1-303-443-2209